Stars A and B, however, have a wide separation of some 1,200 AUs — 165» at a HIPPARCOS distance estimate of 23.5 ly (Golimowski et al, 2000, in ps; Heintz and Cantor, 1994; Phillip A. Ianna, 1992; Martin and Ianna, 1975; and Sarah Lee Lippincott, 1973). (solstation.com)
He noticed that the novae within M31 were about 10 magnitudes fainter than those observed elsewhere in the sky and came up with a new distance estimate for the object: 500,000 light years. (messier-objects.com)
According to the new Sixth Catalog of Visual Orbits of Binary Stars, Stars A and B are separated on average by less than 0.11 AU (a = 0.0098» at a HIPPARCOS distance estimate of 35.4 ly). (solstation.com)